Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Joon Yeob Cho"'
Publikováno v:
Journal of the Korean Ceramic Society. 46:170-174
powder was synthesized by the solid-state reaction of fine and raw materials. Fine grinding media of 50 and 300 microns were used for obtaining fine particulate mixture of and with high homogeneity. Effect of the size of grinding media on the synthes
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e29df58b8c1190106770734e058e9df0
https://doi.org/10.4191/kcers.2009.46.2.170
https://doi.org/10.4191/kcers.2009.46.2.170
Publikováno v:
Japanese Journal of Applied Physics. 42:7397-7400
The layered Mg0.93Ca0.07TiO3–(Ca0.3Li0.14Sm0.42)TiO3 ceramics were prepared by the spark plasma sintering technique, and the effect of thermal strain on the microwave dielectric properties was investigated. Neither the secondary phase nor the activ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::705f976f5e02217915f00265e8333052
https://doi.org/10.1143/jjap.42.7397
https://doi.org/10.1143/jjap.42.7397
Publikováno v:
Materials Chemistry and Physics. 79:239-242
Microwave dielectric properties of the layered functionally graded materials (FGMs) ceramics with Mg 0.93 Ca 0.07 TiO 3 (MCT) and (Ca 0.3 Li 0.14 Sm 0.42 )TiO 3 (CLST) were investigated as a function of sintering times at 1350 °C. The stable and uni
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d06e8000ecd73e1e90befa94f6bde8f8
https://doi.org/10.1016/s0254-0584(02)00285-7
https://doi.org/10.1016/s0254-0584(02)00285-7
Publikováno v:
Journal of the European Ceramic Society. 23:2579-2582
The complex perovskite (Pb0.4Ca0.6)(Fe0.5Ta0.5)O3 ceramics (PCFT) were prepared by mechanochemical process and the microwave dielectric properties were investigated. A single phase PCFT of the perovskite structure was obtained with PbO, CaCO3 and pre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dee310bca0a377793e94f058fd70843c
https://doi.org/10.1016/s0955-2219(03)00175-4
https://doi.org/10.1016/s0955-2219(03)00175-4
Publikováno v:
Journal of the European Ceramic Society. 23:2423-2427
Effect of B2O3–Li2O on the sintering behavior and the microwave dielectric properties of (Ca0.275Sm0.4Li0.25)TiO3 ceramics were investigated as a function of B2O3–Li2O content and sintering temperature. Densities of the specimens were enhanced wi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c6b9645dc67df4ab025fdf08ff4517ce
https://doi.org/10.1016/s0955-2219(03)00164-x
https://doi.org/10.1016/s0955-2219(03)00164-x
Publikováno v:
Japanese Journal of Applied Physics. 41:4601-4604
Layered structure of the Mg0.93Ca0.07TiO3 and (Ca0.3Li0.14Sm0.42)TiO3 system was investigated for the application of stepped impedance resonator (SIR). The difference of thermal expansion coefficient between two components induced thermal strain to e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c4066a09ca1e35e6d0313feea52cb841
https://doi.org/10.1143/jjap.41.4601
https://doi.org/10.1143/jjap.41.4601
Publikováno v:
Journal of the Korean Ceramic Society. 39:222-225
Microwave dielectric properties of the layered and functionally graded materials (FGMs) of 0.93 Ca 0.07 TiO₃ (MCT) and ( 0.3 Li 0.14 Sm 0.42 )TiO₃ (CLST) were investigated as a function of the volume ratio of two components. Dielectric constant w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ee6dc25401102459c522b2c8d2223c5e
https://doi.org/10.4191/kcers.2002.39.3.222
https://doi.org/10.4191/kcers.2002.39.3.222
Publikováno v:
Ferroelectrics. 272:285-290
Microwave dielectric properties of (1-x)(Mg 0.93 Ca 0.07 )TiO 3 - x(Ca 0.3 Li 0.14 Sm 0.42 )TiO 3 ceramics (0.2≤x≤0.8) were investigated. For the specimens with same composition, the dielectric constant was not changed drastically with the sinter
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1df9d8d7639e44d80cb42d5920710a14
https://doi.org/10.1080/713716285
https://doi.org/10.1080/713716285
Publikováno v:
Journal of Materials Science. 36:1373-1376
Undoped and Mn doped ZnS films were prepared in the temperature range 250–350°C by the spray pyrolysis technique. As the deposition temperature increased, the optical transmittance and the intensity of blue emission in the ZnS film were enhanced d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fdf73ca7bb2f0de025a2c5d7505df7ca
https://doi.org/10.1023/a:1017599302802
https://doi.org/10.1023/a:1017599302802
Autor:
Joon Yeob Cho, Ki Hyun Yoon
Publikováno v:
Materials Research Bulletin. 35:39-46
The photoluminescence characteristics of zinc oxide films prepared by spray pyrolysis technique were studied as a function of the substrate temperature, film thickness, and post heat treatment. The ZnO films with the (002) plane oriented wurtzite str
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e85e0f19e4d5c374d772348ed4a78389
https://doi.org/10.1016/s0025-5408(00)00183-5
https://doi.org/10.1016/s0025-5408(00)00183-5